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3018677
Coagulation surface induced (aPTT) is the evaluation of the intrinsic coagulation system and is useful in monitoring heparin therapy; aid in screening for the following: presence of classical hemophilia A, and B; Christmas disease; congenital deficiencies of factors II, V, VIII, IX, X, XI, and XII; presence of dysfibrinogenemia; disseminated intravascular coagulation; liver failure;congenital hypofibrinogenemia; vitamin K deficiency; congenital deficiency of Fitzgerald factor; congenital deficiency of prekallikrein; circulatory anticoagulant when heparin is given for treatment or prevention of thromboembolism. [1]
The University of Iowa Department of Pathology notes a reference range of 22-31 seconds. [2]
In the OMOP vocabulary 3018677 is a Standard Concept that represents the measurement APTT IN PLATELET POOR PLASMA BY COAGULATION ASSAY
The recommended low and high values for each unit associated with 3018677 are below. These are not meant to be normal values. Rather, these are meant to be biologically plausible values. For example, it would be implausible to see a patient with a weight of 0 kg though a person could be 2.5 kg.
In the OMOP vocabulary 8555 is a Standard Concept that represents the unit SECOND
0.001
500
The range 0.001-500 was chosen based on values seen in real world data. Values may vary based on the therapies a person may be on. In the data reviewed more than 100% of data with this standard unit concept should be accounted for with this range.